Biology
What is something found in a plant cell that is not found in an animal cell?
What is the process calledwhen water vapour turns into liquid?
Condensation.
How does a sound travel through the air?
Waves.
What is one safety hazard used in an experiment that mixes an acid and a base together.
Chemical spills, glassware breaking, etc.
Define alkali.
A substance that contains hydroxide particles, has a pH higher than 7, opposite of an acid, a soluble base.
Why are African and Indian elephants considered 2 different species when they're both elephants?
What are the 3 sub-atomic particles in an atom?
Protons, neutrons and electrons.
What is the place called where tectonic plates meet?
Plate boundaries.
A scientist accidentally used the wrong bottle of chemical to use in his experiment. Is this an example of a random, human or systematic error?
Human error.
Define nebula.
A cloud of dust and gas in space.
Suggest one way in which decay by microorganisms is useful?
Nutrient recycling, removing waste.
What 3 elements make up the compound calcium nitrate?
Calcium, Nitrogen, Oxygen.
What is the name given to the pull of gravity that causes tide?
Tidal force.
An experiments aim was to discover which type of flower attracted the most insects to it.
The experiment observed 3 types of flowers and recorded how many insects visit the flowers each day and recorded it in a table.
What was the independent and dependent variable in this experiment?
Independent= Types of flower
Dependent= Number of insects.
Define kinetic.
The energy in movement.
How is a virus different to a bacteria?
Bacteria are cells and viruses are not. Viruses are non-living. Viruses are much smaller than bacteria. Viruses need a host cell to replicate.
If you have an acid with a pH of 2 and a alkali or a pH of 8. What will the resulting pH be?
What is the name given to the flow of electrons in an electrical circuit?
Current.
An experiments aim was to find out if Japan's summers have been getting warmer. It intended to use data from the past 100 years to find out average temperatures for each month of summer.
What is a reasonable hypothesis for this experiment?
Japanese summers have increased in temperature every year for 100 years, or any other reasonable answer.
Define hypothesis.
A testable theory.
What's the function of a ciliated epithelium?
It is thin tissue with tiny hair like structures on it designed to catch and move particles out of the body/
Potassium and water react together.
What is the product of this reaction?
Potassium hydroxide and hydrogen gas.
What type of energy is wasted every time it is changed or transferred?
Thermal energy.
The strength of gravity is approx. 10N/kg on Earth.
Calculate the weight of an adult who has a mass of 75kg in Newtons.
Weight = Mass x Gravity.
Weight = 75(kg) x 10(N/kg) therefore
Weight = 750N
Define subduction.
The process of one tectonic plate sliding underneath another.